speedo accuracy

[amalventano@sc.rr.com (Allyn)]

> If I thought about it I'm sure I could figure out why speedos
> are less accurate at higher speeds mathematically but I'm too lazy.

its due to driven wheel slip % at higher speeds.

> At first I thought it was the flexibility of the cable making it unable to
keep
> up with the speed of the vehicle but that energy has to go somewhere and
> eventually it would just twist off everytime you drive

answered yourself on that one.

> Probably has to do with the higher tension
> of the spring on the needle at higher speeds!  HTH

nope, spring is linear, the tension goes up even from 10-20 mph. going from
10-20 adds the same tension as going from 100-110.

Al